Guard for planing machines



April 21, 1931. o. BOISVERT GUARD FOR PLANING MACHINES Filed Feb. 10,1930 2 Sheets-Sheet 1 5; V ff 2 Inventor 22 0. JO/WV8/"f A iforney April21, 1931.

o. BOISVERT 1,801,326 GUARD FOR PLANING MACHINES Filed Feb. 10, 1930 2Sheets-Sheet 2 Patented Apr. 21, 1931 UNITED STATES ONESIME BOISVERT, OFEAST PROVIDENCE, RHODE ISLAND GUARD FOR PLANING MACHINES Applicationfiled February 10, 1930. Serial No. 427,333.

This invention relates to improvements in wood working machinery andmore particularly to a novel guard for protecting workmen.

The principal object of this invention is to provide a collapsible guardfor planing machinery which is capable of being constructed to permitdisplacement of the work.

Another important object of the invention is to provide a guard whichbecause of its collapsible construction, will not be inconvenient inuse, and furthermore will not be in the way of the workmen during the operation of the machine.

Numerous other important objects and advantages of the invention willbecome more apparent to the reader after a consideration of thefollowing specification and claims.

In the drawings planing machine showing the novel guard in extendedposition and bearing against work disposed on the machine.

Fig. 2 is a side elevational view of the plan- 2 ing machine equippedwith the novel guard.

disclosing the outer section on the latch and the innermost section onthe right.

Referring to the drawing wherein like numerals designate like parts, itcan be seen in Figs. 1 and 2, that the numeral 5 is a table mounted uponthe base structure 6. Upon this table 5 is the fence 7 against whichsuitable work 8 may bear.

Journaled transversely through the base 6 at the upper portion thereofis the drive shaft 9, for the rotary cutter 10. (See Fig. 2.) The shaft9 projects beyond the rear side of the base 6 and is equipped withapulley 11 over which the power belt 12 is trained. The novel guard isgenerally referred to Figure 1 represents a top plan view of a bynumeral 18 and comprises an outer section 14, an inner section 15 and aplurality of intermediate sections a, b, 0, and cl. It will be noted,that the section 14 is sufficiently large to receive not only thesection 15, but all of the intermediate sections a, Z), c and d.

Furthermore the sections graduate in size, the section a beingsufliciently large to receive the section b, the section 5 beingsufficiently large to receive the section 0, a to receive (Z and cl toreceive the section 15. i

It will be noted that the section 15 is stationarily secured to thetable 5. Each section has a laterally disposed flange 16 which extendsalong one longitudinal edge and along its free end. The pivotal end ofeach intermediate section is provided with an opening 17 for receivingthe pin 18 (see Fig. 2). r

The outer end of each intermediate section and the section 15 isprovided with a longitudinally extending lug 19 which is adapted to abutthe inwardly extending lug 20 on the flanges 6 of adjacent sections.This lug 19 is provided on each section, excepting section 14, while thelugs 20 are provided on each section excepting section 15 for abutmentwith the lugs 19.

The pivotal end of the sections 14 and 15, are clearly shown in Fig. 7,wherein the section 14 is provided with a web 21 at the oppositelongitudinal edge thereof from the flange 16 and also an intermediateweb 22. It can be noted that each of the webs 21 and 22, as well as theflange 16 is provided with an opening 22 for receiving theaforementioned pin 18.

The section 15 is provided with apertured webs 23 and 24. The openingsin these webs 23 and 24 also receive the pin 18.

It can be seen that when all of the sections are connected" together, inthe manner shown in Fig. 4, they are in interlocked connection, that is,the sections cannot become spaced from each other due to the abutting ofthe latch 19 against the lugs 20. While the pivotal ends of the sectionsare connected to the table 5 by the pin 18, the section 15 is secured tothe table by disposing a suitable securing element through the aperturedcar 25 at its free end. To maintain the outermost section 14tensionallyagainst the work, leaf springs 26 are interposed between theflanges at 16, so that they will normally assume the 5 extended positionshown in Fig. 3.

As the guard expands over the cutter in the manner shown in Fig. 1,there is very little possibility of any workmen injuring themselvesaccidentally through the agency w of the cutter 10. g

While the foregoing description specifically sets forth the detailsmaking up this invention, it is to be understood that certain changesmay be made in the shape, size, and v materials without departing fromthe spirit and scope of the invention as claimed hereinafter. 7 Havingthus described my invention, what I claim'as new is Z0 1. A guard forthe blades of cutting machinery, comprising a plurality of pivotalplates,.said plates being pivotally connected together each at one ofits ends, flanges on the longitudinal edges of the plates, and leafsprings interposed between the said flanges,

so as to maintain the. plates in extended relation with respect to eachother. V

2. A guard for the blades of cutting machinery, comprising a pluralityof pivotal plates, said plates being pivotally connected together, eachat one of its ends, flangescon the longitudinal edges of the plates,leaf springs interposed between the said flanges, so as to maintain theplates in extendedrelation with respect to each other, and abutting vlugs on the free ends of the said plates to limit their extendedrelation. t

In testimony whereof I aflix my signature.

. ONESIMEBOISVERT.

4G v i

